Patent GB-265152-A (GB)
Abstract: 265,152. Burroughs Adding Machine Co., (Assignees of Horton, A. A.). Jan. 29, 1926, (Convention date]. Adding and subtracting apparatus.-A key-set and independently operated machine is built up of a number of independent units comprising a keyboard section, main operating section, totalizer section, printing section, and paper feed and ink-ribbon feed section one or more of which sections may be detached and replaced to change the functions of the machine. The invention is shown as applied to a machine of the type described in Specification 265,122. Operating means; differential mechanism. - The main operating section comprises side plates 51, 52, Figs. 2 and 4, in which are journalled the main shaft 71 and the shaft 237 carrying the totalizer actuating segments 235 to which are pivoted the type-bars 264. The side plates support the differential stop bars 233 that, cooperating with the key items and the mechanism, operate in the manner described in Specifications 265,135 and 265,137. Keyboards. - This section comprises top and bottom plates 159 and 160 separated by spacing- plates 170 and is coupled to the main operating section by slipping the hook 172 over a pin 173 on the side-plates 51, 52 and securing the projections 170<a> to the ends of the cross shaft 142 by means of screws. The keyboard mechanism is described in Specification 265,136. With printing mechanism. - The printing section is mounted on top of the operating section and comprises a base-plate 56 with lugs 56a for securing it to the side plates. A shaft 271 carries the printing hammers 270 that function in the manner described in Specification 265,140. Ink-ribbon mechanism; line-spacing mechanism.-The paper and ink-ribbon mechanism is constructed as described in Specification 263,097, [Class 100 (iv), Typewriters &c.], and is carried by a base-plate 62 and side plates 63. This mechanism is mounted outside a casing covering the other units and is secured thereto by screws. Operating by motor.-The motor 100 is enclosed within the casing adjacent the side-plate 51 and the higher key-banks overlap the motor operating parts on the outside of the said plate. The motor-operating mechanism is described in Specification 265,135. Totalizing - counters; varying functions of machine.-The totalizer section comprises sideplates 55 which form extensions of the sideplates 51, 52, and are secured to a cross-plate 53 thereon by screws. As shown in Fig. 4, the totalizer pinions 236 and the transfer mechanism occupy the lower part of the frame and the upper part carries the mechanism for operating the impression hammers and the paper and ink-ribbon feeds. This form of totaliber unit and associated mechanism is constructed as described in Specification 265,122 and is employed for adding purposes solely. If it is desired to convert the machine to one that will add and subtract, this unit is replaced by a unit with a co-operating control mechanism mounted on the side-plates. This mechanism is described in Specification 265,134. The totalizer unit may be provided with two totalizers similar to that first mentioned and provided with control mechanism as described in Specification 265,122 for the purpose of throwing one or other or both totalizers into and cut of engagement with the actuating segments 235.